Trolley for electric-motor cars



(No Model.)

F. BAIN. TROLLBY FOR ELECTRIC MOTOR CARS.

No. 433,611. Patented Aug. 5, 1890.

' 'UNITED STATES PATENT OFFICE.

FORFIE BAIN, OF CHICAGO, ILLINOIS;

TROLLEY FOR ELECTRIC-MOTOR CARS.

SPECIFICATION forming part of Letters Patent No. 433,611, dated August 5, 1890.

Application filed February 17, 1890. Serial No. 340,800- (No model.)

To all whom it may concern: desired depth. A machine of the kind re- Be it known that I, FORI'JE BAIN, a citizen ferred to is shown and described in all its deof the United States, residing at Chicago, in tails in my application for Letters Patent,Sethe county of Cook and State of Illinois,have rial No. 310,7 99, filed concurrently herewith 5 invented a new and useful Improvement in on the 17th day of February, 1890. Trolleys for Electric-Motor Cars, of which the To one lateral side of the motor B, near its following is a specification. rear end, is secured an upright bar 7", which My invention relates to an improvement-in should extend to or beyond the upper of the trolleys for use with electric-motor cars gentwo wires q and q, supported along the side 1o erally, though I have designed my present near the top of the mine to form the circuit,

improvement for especial use with miningand the bar 0 is bifurcated, as shown, to conmachines driven by electric motors and servstitute it a guide, preferably from near a ing the purpose of cutting a longitudinal openpoint on the plane of the lower of the two ciring in the wall of mineral, thereby to under- Quit-wires to its upper end. v The rollersp and 15 mine it and render its dislodgment by blast- 1) of the trolley device 0, for traveling, reing the more easy. I spectively,on the wires q and q of the cir- The object of myimprovementis to provide cuit E, may be connected together one to fola trolley-connection for the motor which shall low the other, as usual, and, as shown in Figs. insure contact with the lines of the overhead 1 and 2, by a connecting-bar 0, secured near 20 or lateral circuit notwithstanding irregulariits opposite ends to the journal ends of the ties in the latter, as in the ease of unequal rollers, the rollers through their connecting sagging thereof and the like. medium 0 being pivotally connected with the It is also my object to provide such a trolmachine A, preferably at the rear side of the ley mechanism as shall not require different motor, bya jointed arm or lever D. The up- 25 adjustingfortheforward and backward moveright arm n of the jointed connecting mement of the carriage, and it is further my dium D is pivoted at its lower end to the maobject to provide a generally-improved form chine, as at the rear side of the motor, and of trolley device for the purpose stated. the arm m thereof is pivotedat one end to the To these ends my invention consists in the upper end of the arm 11, extends thence at an 0 general construction of myimprovement; and angle through the guide afforded by the biit also consists in details of construction and furcated bar 0, and is secured at its fart-her combinations of parts. extremity to the roller-connectingbar o. The In the accompanying drawings, Figure 1 jointed lever D affords a convenient guideshows an undercutting miningmachine in support, as shown, for the wires 0:, connect- 35 rear elevation provided with my improved ing the trolley-rollers with the motor.

trolley device operatively applied. Fig. 2 is As will readily be seen from the foregoing a view in side elevation of the trolley device; description, the connecting medium for the and Fig. 3, a view showing the trolley device trolley device is so flexible that whatever inas presented in Fig. 1, but illustrating amodiequalities-change of direction or of distance 0 4o fied construction thereof. from the plane ofthe track Z-may occur in A denotes an undercutting miningmathe lines the rollers will readily conform chine having an electric motor 13, of any suitthereto and thus always be maintained in able or well-known construction for the purproper contact with the line-wires of the cirpose, supported on that part of its frame porcuit. The guide-bar r braces the jointed arm 5 5 tion which carries the cutters, and is movable D and holds it against displacement.

by the power of the motor properly geared to Instead of connecting the rollers 13 and 13 'it longitudinally in a forward direction to adby the connecting-bar 0, and thence connect- Vance the cutters to produce the desired depth in g them through a single arm on with the pivof undermining opening they form, and in a otal arm it, they may, as shown in Fig. 3, be I00 50 backward direction to withdraw the cutters each separately connected pivotally by an after they have formed the opening of the arm m, passed through the guide-bar r, with the upper end of the arm 72, this construction affording the same advantages as that shown in Figs. 1 and 2.

\Vhat I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a car having an elec tric motor B for actuating it and a trolley device for a circuit E, a double-jointed-lever device D, flexibly connecting the said trolley device with the car, and having an upright arm 'n, pivotally supported on the car to swing transversely thereof, and an arm on, pivotally connected with the arm n to extend at an angle therefrom and swing on its pivot through a Vertical plane, substantially as described.

2. In combination With a car having an electric motor B for actuating it and a trolley device for a circuit E, a jointed-lever device D,

flexibly connecting the said trolley device with the car, and a guide for an arm m of the device D, secured to the machine, substantially as described.

3. In combination with aoar having an electric motor 13 for actuatingit and a trolley device for a circuit E, a guide, and a jointed-lever device D, comprising arms 71 and m, the former pivoted at its lower end to the car and the latter to the upper end of the arm 'n, and controlled by the guide and connected with the trolley device, substantially as described.

4. In combination with a car having an electric motor B for actuating it and a trolley device for a circuit E, a guide, and a jointedlever device 'D, comprising an arm n, pivoted at its lower end to the machine, and arms m, each pivoted at one end to the upper end of the arm n and controlled by the guide, and each connected at its opposite end with the contact-rollers p and p of the trolley device, substantially as described.

FOREE BAIN. In presence of- J. W. DYRENFORTH,

M. J. FROM. 

